Biology Basics
25 questions · Answers revealed below each question · Print this set
1.What gas do plants release during photosynthesis?
- A. Carbon dioxide
- B. Nitrogen
- C. Methane
- D. Oxygen
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Oxygen
Did you know? The gas comes from split water molecules.
2.What pigment makes plants green?
- A. Hemoglobin
- B. Carotene
- C. Melanin
- D. Chlorophyll
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Chlorophyll
Did you know? Autumn reveals yellow and orange pigments beneath.
3.How many legs does an insect have?
- A. Six
- B. Ten
- C. Eight
- D. Four
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Six
Did you know? Eight legs belong to arachnids, like spiders.
4.Which mammal can truly fly?
- A. The colugo
- B. The bat
- C. The flying squirrel
- D. The sugar glider
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The bat
Did you know? The others just glide between trees.
5.What do we call animals that eat only plants?
- A. Carnivores
- B. Omnivores
- C. Herbivores
- D. Insectivores
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Herbivores
Did you know? Cows and rabbits are classic examples.
6.What is the process by which living things make more of themselves?
- A. Evolution
- B. Digestion
- C. Reproduction
- D. Respiration
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Reproduction
Did you know? It passes genes to the next generation.
7.How many legs does a spider have?
- A. Eight
- B. Four
- C. Ten
- D. Six
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Eight
Did you know? Spiders are arachnids, not insects.
8.Which bone connects the hip and the knee?
- A. The tibia
- B. The pelvis
- C. The femur
- D. The humerus
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The femur
Did you know? The femur also ranks among the strongest.
9.Which cells fight infection in the human body?
- A. White blood cells
- B. Red blood cells
- C. Platelets
- D. Nerve cells
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White blood cells
Did you know? They surround and digest invading microbes.
10.What do we call animals that eat both plants and meat?
- A. Producers
- B. Herbivores
- C. Carnivores
- D. Omnivores
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Omnivores
Did you know? Humans, bears and pigs are omnivores.
11.What is the smallest unit of life?
- A. The organ
- B. The atom
- C. The tissue
- D. The cell
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The cell
Did you know? Atoms build cells, but only cells live.
12.Which animal is the tallest in the world?
- A. The ostrich
- B. The camel
- C. The giraffe
- D. The elephant
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The giraffe
Did you know? Bulls reach about 5.5 meters.
13.Which organ do fish use to breathe?
- A. Fins
- B. Lungs
- C. Skin
- D. Gills
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Gills
Did you know? Gills pull oxygen straight from water.
14.Which big cat's tail works like a rudder at full sprint?
- A. The lion
- B. The cheetah
- C. The horse
- D. The greyhound
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The cheetah
Did you know? It sprints near 110 km/h for short bursts.
15.What part of the plant absorbs water from soil?
- A. The flowers
- B. The leaves
- C. The stem
- D. The roots
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The roots
Did you know? Root hairs multiply the absorbing surface.
16.What do bees collect to make honey?
- A. Dew
- B. Pollen
- C. Sap
- D. Nectar
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Nectar
Did you know? Pollen is collected separately as protein food.
17.What is the study of birds called?
- A. Botany
- B. Entomology
- C. Ornithology
- D. Ichthyology
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Ornithology
Did you know? Entomology studies insects; ichthyology, fish.
18.Which animal has the longest gestation, around 22 months?
- A. The whale
- B. The giraffe
- C. The rhino
- D. The elephant
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The elephant
Did you know? Calves weigh about 100 kg at birth.
19.What is the largest pair of organs inside the chest, after the heart?
- A. The liver
- B. The stomach
- C. The lungs
- D. The kidneys
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The lungs
Did you know? Together they hold about half a liter of air at rest.
20.What is a group of lions called?
- A. A pride
- B. A school
- C. A pack
- D. A herd
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A pride
Did you know? Prides are led mainly by related females.
21.What is a group of fish swimming together called?
- A. A herd
- B. A pride
- C. A flock
- D. A school
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A school
Did you know? Schooling confuses predators.
22.What do earthworms do that helps gardens?
- A. They pollinate flowers
- B. They eat pests
- C. They mix and enrich the soil
- D. They repel weeds
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They mix and enrich the soil
Did you know? Their tunnels let air and water reach roots.
23.Which insect makes the loudest sound relative to its size?
- A. The water boatman
- B. The ladybug
- C. The ant
- D. The butterfly
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The water boatman
Did you know? The tiny water boatman "sings" with its genitals.
24.Which animal sleeps standing up, often?
- A. The cat
- B. The horse
- C. The dog
- D. The rabbit
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The horse
Did you know? A leg-lock tendon keeps them upright.
25.What color is a polar bear's skin under its fur?
- A. Pink
- B. Gray
- C. White
- D. Black
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Black
Did you know? Black skin absorbs the sun's heat better.
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